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# announcements
w
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f
What ever your metric is, its selecting all the audience for that experiment, hence the 100%
if you have it balanced at 50/50 split you’d get closer to 0% difference
i
Thanks @fresh-football-47124. And what would be the 'control' in 'Chance to beat control'. The doc mentions one of the variants . However, both variants are performing the same. Where is the 77% 'chance to beat control' coming from?
f
have to check with @luke tomorrow
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its still not significant
i
@fresh-football-47124 please let me know when you hear back from @helpful-application-7107 https://growthbookusers.slack.com/archives/C01T6PKD9C3/p1690523055491989?thread_ts=1690520924.045089&cid=C01T6PKD9C3
h
The reason for this is that 950/950 is more evidence for 100% than 208/208 is in a Bayesian context. We're more certain that the TG value here is actually 100% because we have more data in that group. This is one way that bayesian posteriors will differ from frequentist difference in means tests.
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i
Hi Team During experiment analysis, I am getting the 'Sample ratio mismatch' when running a target vs control experiment . Our user base is extremely large and hence we take only a very small %age of users in our global control group ( in absolute terms which still is a few hundred thousands). Do you think this ratio mismatch would affect the results when using a bayesian engine for analysis?
f
What P value did you get?
We warn about SRM errors because it typically indicates an implementation problem that might bias the results.
i
@fresh-football-47124 it shows, p-value = 0.
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